1. Department of Mechanical and Biomedical Engineering; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong China
2. Department of Materials Science and Engineering and Center of Super-Diamond and Advanced Films; City University of Hong Kong; 83 Tat Chee Avenue Hong Kong China
3. College of Chemistry and Chemical Engineering; Central South University; 932 South Lushan Road 410083 Changsha China